First 100 Prime Numbers

The first 100 prime numbers. Primes are divisible only by 1 and themselves — they are the building blocks of all integers.

2 is the only even prime — every other even number divides by 2. The widest gap between consecutive neighbors in this list is 18: primes wander further apart as numbers grow, yet never run out — Euclid proved the supply is endless. The list stays tight as well: all 100 of these primes fit inside the range 2 through 541, where they make up about 18.5% of all integers — prime density thins slowly as numbers grow.

The first 100 prime numbers, in order from 2
#	Prime
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	23
10	29
11	31
12	37
13	41
14	43
15	47
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	83
24	89
25	97
26	101
27	103
28	107
29	109
30	113
31	127
32	131
33	137
34	139
35	149
36	151
37	157
38	163
39	167
40	173
41	179
42	181
43	191
44	193
45	197
46	199
47	211
48	223
49	227
50	229
51	233
52	239
53	241
54	251
55	257
56	263
57	269
58	271
59	277
60	281
61	283
62	293
63	307
64	311
65	313
66	317
67	331
68	337
69	347
70	349
71	353
72	359
73	367
74	373
75	379
76	383
77	389
78	397
79	401
80	409
81	419
82	421
83	431
84	433
85	439
86	443
87	449
88	457
89	461
90	463
91	467
92	479
93	487
94	491
95	499
96	503
97	509
98	521
99	523
100	541

Frequently asked questions

What are the first 100 prime numbers?

The first 100 primes are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29….

What is the 100th prime number?

541 is the 100th prime number.

Why is 1 not a prime number?

A prime must have exactly two distinct factors: 1 and itself. The number 1 has only one factor, so it is not prime (and not composite either).

Related calculators

Prime Checker Prime Factorization All tables

Related tables

First 90 Prime Numbers

#	Prime
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	23
10	29
11	31
12	37
13	41
14	43
15	47
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	83
24	89
25	97
26	101
27	103
28	107
29	109
30	113
31	127
32	131
33	137
34	139
35	149
36	151
37	157
38	163
39	167
40	173
41	179
42	181
43	191
44	193
45	197
46	199
47	211
48	223
49	227
50	229
51	233
52	239
53	241
54	251
55	257
56	263
57	269
58	271
59	277
60	281
61	283
62	293
63	307
64	311
65	313
66	317
67	331
68	337
69	347
70	349
71	353
72	359
73	367
74	373
75	379
76	383
77	389
78	397
79	401
80	409
81	419
82	421
83	431
84	433
85	439
86	443
87	449
88	457
89	461
90	463
91	467
92	479
93	487
94	491
95	499
96	503
97	509
98	521
99	523
100	541

#	Prime
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	23
10	29
11	31
12	37
13	41
14	43
15	47
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	83
24	89
25	97
26	101
27	103
28	107
29	109
30	113
31	127
32	131
33	137
34	139
35	149
36	151
37	157
38	163
39	167
40	173
41	179
42	181
43	191
44	193
45	197
46	199
47	211
48	223
49	227
50	229
51	233
52	239
53	241
54	251
55	257
56	263
57	269
58	271
59	277
60	281
61	283
62	293
63	307
64	311
65	313
66	317
67	331
68	337
69	347
70	349
71	353
72	359
73	367
74	373
75	379
76	383
77	389
78	397
79	401
80	409
81	419
82	421
83	431
84	433
85	439
86	443
87	449
88	457
89	461
90	463
91	467
92	479
93	487
94	491
95	499
96	503
97	509
98	521
99	523
100	541

#	Prime
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	23
10	29
11	31
12	37
13	41
14	43
15	47
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	83
24	89
25	97
26	101
27	103
28	107
29	109
30	113
31	127
32	131
33	137
34	139
35	149
36	151
37	157
38	163
39	167
40	173
41	179
42	181
43	191
44	193
45	197
46	199
47	211
48	223
49	227
50	229
51	233
52	239
53	241
54	251
55	257
56	263
57	269
58	271
59	277
60	281
61	283
62	293
63	307
64	311
65	313
66	317
67	331
68	337
69	347
70	349
71	353
72	359
73	367
74	373
75	379
76	383
77	389
78	397
79	401
80	409
81	419
82	421
83	431
84	433
85	439
86	443
87	449
88	457
89	461
90	463
91	467
92	479
93	487
94	491
95	499
96	503
97	509
98	521
99	523
100	541